Window.



G. KNAPPE.

WINDOW.

APPLIOATION FILED JUNE 5, 1911.

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G. KNAPPE.

WINDOW.

V APPLIOATION FILED JUNE-5, 1911.

Patented Nov. 28, 1911.

4 SHEETS-SHEET 3.

Patented Nov. 28, 1911.

1 SHEETSSHEBT 4.

WINDOW.

APPLICATION FILED mm: 5, 1911.

G. KNAPPE.

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UNITED STATES PATENT OFFICE.

GUSTAV KNAPPE, OF STETTIN, GERMANY.

WINDOW.

To all whom it may concern:

Be it known that I, GrnsrAv KNAPPE, a subject of the King of Prussia, and resident of No. 50 Poelitzerstrasse, Stettin, in the Kingdom of Prussia, Germany, have invented certain new and useful Improvements in Windows, of which the following is a specification. a.

My invention relates to an improved window, so constructed that ventilation may be obtained without opening the sash or sashes of the window. For this purpose the sashes of the window are not hinged, as usual, to the upright sides of the window-frame, but arranged to turn on trunnions andadapted to be lifted and lowered within the frame, thereby producing gaps in the horizontal or cross-direction of the window, through which gaps a free circulation of the inside and outside atmosphere is permitted. The construction of the window according to my invention does not in the least interfere with the facility of opening the window-sashes to the inside or outside in a known manner and retaining them in the open position, but for a moderate, still suflicient ventilation, particularly at night, the horizontal gaps have been found preferable, the more so, as the entrance of rain or snow or insects, through such gaps is prevented in a considerable degree, while through an open window anything may freely pass into the room.

To obtain a play for lifting and lowering the sashes of the window within their frame, I construct the transom-bar of the frame of two separate parts adapted to be moved toward and from each other in the vertical direction by the aid of a handle and a combination of levers and shifting bars or rods, as hereinafter described.

The mechanism of my invention may be applied to the upper sashes of the window alone, or to both the upper and lower sashes in connection with each other, and it may equally be applied to windows having a single upper and lower pane, as to those havmg double panes.

To make my invention perfectly understood, l[ have illustrated the same in the accompanying drawings, in which:

Figure 1 is a front-view of a window constructed according to my invention, in the closed state. Fig. 2 is a vertical section of the same. Figs. 3 and t are similar views showing the window in the open state, 2'. c. with the gaps opened according to this in- Specification of Letters Patent.

Application filed June 5, 1911.

Patented Nov. 28, 1911.

Serial No. 631,356.

vention. Figs. 5 to 12 serve to explain sundry details of the construction as hereinafter fully described.

The window-frame represented in the drawings is shown broken away in Figs. 1 and 3 in the central, vertical direction; the said central portion left away may contain the frame sides of the two panes in doublepane windows of the known construction.

Secured to one side or upright of the window-frame, within convenient reach of the hand of the operator, is a lever a, adapted to be turned by hand from the closed position shown in Fig. 1 to the open position shown in Fig. 3. The short arm of said lever a engages a slide-bar or rod 6, the upper end of which is connected to a bell-crank lever c, pivoted with its opposite end to a horizontal bar (Z arranged to slide within a longitudinal groove of the upper part i of the transom-bar. The said sliding bar (Z carries pivoted to it with their upper ends two levers f adapted to turn on central studs 9 secured to a lower stationary bar 6 extending horizontally between the upper part 2' and the lower bar 71, of the transom-bar. The lower ends of said levers f engage the lower part 72. of the transom-bar by entering into a longitudinal groove cut into the upper edge of said part It, the sides of said groove having each a longitudinal straight slot, into which slots engage the ends of a cross-pin at the lower end of lever f, as shown in dotted lines in Fig. 12. By this means the lower arm of the levers f is permitted to slide within the part it of the transom-bar, but is prevented from being lifted out of its slotted groove within said part h, and it will be seen, that, by shifting the rod d from the right to the left in Fig. 1, the upper part i of the transom-bar will be lowered, while the lower part it is simultaneously lifted into the respective positions shown in Figs. 3 and 4-. The upper sashes of the window are turning on trunnions 0, 0 secured to them and engaging corresponding sockets within the upper horizontal bar of the window-frame and the upper part i of the transom-bar, respectively. hen the upper part 2' of the transom-bar is being lowered, as described, the trunnions 0, 0 will follow in the descent till the lower trunnions 0 come to strike against the upper end of vertical pivots 70 secured in the stationary horizontal bar 6, as fully shown in Figs. 6 and 7. The said pivots 7: prevent the said trunnions 0 from z' of the transom-bar is moving farther down,

another gap 29 opens between the lower edge of the upper sashes and the upper edge of said part 2', as clearly shown in Figs. 3 and 4. The lower sashes of the window are equally turning on trunnions 0 0 projecting from their upper and lower edges and engaging corresponding sockets, the upper sockets being provided within the lower movable part it of the transom-bar. The said trunnions 0 have a collar Z formed to their upper ends and when the part it of the transom-bar is being raised by the lever f, as before described, the underside of said collar l will be engaged by a cross-pin or bar 5', as shown in Fig. 7, secured within said part h of the transom-bar, and by said pin or bar 8 the lower sash of the window will be lifted, thereby forming a third gap p below the lower sashes and a fourth gap p between the lower edge of the part it and the upper edge of the lower sash, as fully shown in Figs. 3 and 4:. The said fourth gap 32 is obtained by leaving sufiicient play between the collar Z of trunnion 0 and the cross-pin s, by this means the part it of the transombar will be lifted for a small distance before the lower sash is carried up by the cross-pin s engaging under the collar Z.

The upper trunnions 0 of the upper sashes and the lower trunnions 0 of the lower sashes have sufiicient length to keep engaged in their respective sockets when the upper sashes are lowered and the lower sashes lifted to form the open gaps.

As stated before, the window-sashes may be opened to the inside or outside by turning on their trunnions, and they may be secured in their open position to prevent their being thrown by the wind. To obtain such fastening of the sashes, any suitable means may be provided, but I prefer to construct the trunnions 0 and 0 adjustable in the vertical direction for conveniently retaining the sashes in their open position when swung on their axis formed by the trunnions. The adjustability is obtained by means of a lever n engaging the trunnion for raising or lowering the same, and by a square portion 9 formed at a portion of the length of the trunnion, the said square portion 9 being made to engage a corresponding square portion of the corresponding socket when the trunnion is shifted in one direction. Owing to such engagement the sash will be prevented from turning till the square portion of the trunnion has been lifted from the square portion of the socket and the sash, then, will again be able to freely turn. The details of construction of the trunnions with square portions and of the levers n engaging said trunnions are particularly shown in Figs. 9, l0 and 11. In Fig. 9 the trunnion 0 is shown run in, thus permitting the sash to turn, while in Fig. 11 the trunnion is shown run out, thereby forcing the square portion 9 into the corresponding square portion of the upper end of the socket, thereby preventing the sash from being turned.

To obtain a tight joint between the sides or uprights of the sashes and the adjacent sides or uprights of the window-frame, I prefer to provide longitudinal grooves in the adjacent edges of the said parts, as fully shown in the cross-section illustrated in Fig. 5. A web or bar 7" engages the said grooves and a bolt m secured to the part h of the transom-bar (see Figs. 6 and 8) engages with a finger or pin into an inclined slot of the said web or bar 1". On turning the handle of lever a downward from the posit-ion shown in Fig. 1 into the position shown in Fig. 3, the part it is lifted, as before described, and in rising the said bolt m, en gaged within the inclined slot of the web 9, will push the same into its engaging groove and the sashes, then, will be free to turn on their trunnions, as desired. a

It ought to be observed, that in Figs. 1 and 3 the slide-bar cl with the levers 7 secured to it appears to be located on the front face of the transombar, plainly visible to the eye, though in reality, the said slidebar is concealed within a groove of part 2' and shield-bars t and u are preferably applied to overlap the space between the two parts 2' and h of the transom-bar, as fully shown in Figs. 2 and 4.

I claim as my invention:

1. In a window, the combination, with the sashes, of trunnions vertically secured to said sashes, sockets to be engaged by said trunnions, a transom-bar horizontally divided into two separate parts located between the said sashes and adapted to be shifted toward and from each other in the vertical direction, means to perform said shifting of the parts of the transon1bar, and means to obtain gaps between the windowframe and the sashes, as also between the transom-bar and the sashes, substantially as and for the purpose setforth.

2. In a window, the combination, with the window-frame, of a transom-bar horizontally divided into two separate parts located between the upper and lower sashes and adapted to be shifted toward and from each other in the vertical direction, levers connected to the said two parts of the transombar and to a stationary intermediate bar, to pull the said movable parts against each other or to spread them away from each other, a slide-bar actuating said levers, a bell-crank lever to shift said slide-bar in the horizontal direction, a vertical slide-bar to actuate the said bell-crank lever, means for shifting the said vertical slide-bar, and means for simultaneously lowering the upper sashes and raising the lower sashes of the window through the medium of the two movable parts of the transom-bar, substantially as and for the purpose set forth.

3. In a window, the combination, with a transom-bar horizontally separated into two parts adapted to be pulled toward or spread from each other, of upper sashes and lower sashes, each turning on vertical trunnions, means for connecting the upper sashes to the upper part of the transom-bar and the lower sashes to the lower part of the transom-bar, and means, substantially as described, to form an open gap between the upper sashes and the upper part of the transom-bar and an open gap between the lower sashes and the lower part of the transombar, substantially as and for the purpose set forth.

4;. In a window, the combination, with a transom-bar horizontally divided into two parts adapted to be pulled toward and spread from each other, of window-sashes located above and below the said transombar, means for raising and lowering the movable parts of said transom-bar, vertical trunnions supporting the said sashes and means for locking the said sashes in their open position when turned upon their trunnions, substantially as and for the purpose set forth.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

GU$TAV KNAPPE.

WVitnesses KASIMIR GnznLAoHowsKI, EMIL SCHMIDT.

Gopies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. G. 

